pitch em! recently order alot of these worms the second i questioned if its been to long i froze em, they would get their daily rinse and noticed a smell starting to occur gave them a complete rinse 4times until water was clear, placed in containers with a little bit of worms and little bit of the aged chilled water and froze em, the thinner the worm/water mixture was the faster they froze, i now feed my angels, rays and cichlids the worms just as if they were blood worms zero problems, but highly recommend tossing what you have left! best of luck bud! when in doubt do without! take care!-Dan